From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1KQPpd-0002Bl-68 for user-mode-linux-devel@lists.sourceforge.net; Tue, 05 Aug 2008 09:56:21 -0700 Received: from gw-colo-pa.panasas.com ([66.238.117.130] helo=natasha.panasas.com) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1KQPpb-0008KM-Oa for user-mode-linux-devel@lists.sourceforge.net; Tue, 05 Aug 2008 09:56:21 -0700 Message-ID: <48988612.3030204@panasas.com> Date: Tue, 05 Aug 2008 19:55:46 +0300 From: Boaz Harrosh MIME-Version: 1.0 References: <489870E7.7070000@exasol.com> <489873E0.9030801@panasas.com> <489881BE.9070506@exasol.com> In-Reply-To: <489881BE.9070506@exasol.com> Subject: Re: [uml-devel] kernel module support broken on x86-64? List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: user-mode-linux-devel-bounces@lists.sourceforge.net Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net To: juergen.kadidlo@exasol.com Cc: user-mode-linux-devel@lists.sourceforge.net juergen.kadidlo@exasol.com wrote: > Boaz Harrosh wrote: >> juergen.kadidlo@exasol.com wrote: >> >>> Hi! >>> >>> I've compiled an UML kernel based on 2.6.25 but loading kernel modules >>> seems to be broken. No matter which module I try to load the output >>> looks similar to this: >>> >>> overflow in relocation type 11 val 80836d41 >>> 'loop' likely not compiled with -mcmodel=kernel >>> >>> After searching for a while I found some threads from 2006 discussing >>> this issue, e.g.: >>> http://www.mail-archive.com/user-mode-linux-devel@lists.sourceforge.net/msg03693.html >>> and >>> http://marc.info/?l=user-mode-linux-devel&m=115125101012707&w=2 >>> >>> As Andi Kleen has mentioned in a mail from the first thread, simply >>> appending "-mcmodel=kernel" to the KBUILD_CFLAGS does not work (I tried >>> it anyway and can confirm his statement ;) >>> >>> Since I could not find any solution I've decided to write this mail and >>> ask about the current state of this issue and of course for a solution! >>> I simply don't want to believe that there is no loadable module support >>> for UML in 2008... >>> >>> Regards >>> JK >>> >>> >> >> Every thing is fine down here. What host Kernel-gcc-glibc / uml-gcc-glibc >> are you using? >> >> I'm using out-of-tree modules with uml for every kernel since 2.6.19. >> I have both Host and UML as x86_64 on FC7 with gcc 4.1.2 >> >> Boaz >> >> > I'm glad to here that the bug has been fixed. Anyway, it does not work > with my configuration: > > - CentOS 5.1 as host system and UML root fs > - Kernel 2.6.25.4 (vanilla, but config taken from the CentOS kernel) > - GCC 4.1.2 > - GLIBC 2.5 > > Regards > JK > I used to run with red-hat 4.5 so this should work. 64 bit, right? >From passed experience I've seen that UML will only work if I first do "make ARCH=um defconfig" and then manually enable any needed options with make xconfig. other wise it breaks in all kind of ways. Even doing a make oldconfig on a good uml config file from older kernel will not work. Try to do defconfig and see if it loads at all. How do you compile and run the out-of-tree module or is it one of the built in modules? Boaz ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel